. >> reporter: today, government official trying to contain this salmonella outbreak told us it doesn't look good and to expect more reported cases linked to jars of peanut butter sold at grocery stores across the country. so far, 30 people sick, most of them children, across 19 states. for families searching through kitchen cabinets tonight for potentially dangerous jars of nut butter, it's confusing. first, what jars and brands are being recalled? well, it isn't your larger name brands like jif or skippy. those products are fine. all of the recalled products are linked to the sunland peanut corporation in new mexico. they make the peanut butter under numerous brand names. >> all the illnesses that have been investigated are related to the peanut butter products from the one plant. >> reporter: so now you've found one of these brands in your cupboard. should you automatically toss it out? the company says to look on the side of the jar for the "best if used by" date. anything between may 1st and september 24, 2014, throw it away. what if your family has gone through half the jar? what